[Boatwaco]

Check this too: https://www.f150ecoboost.net/threads/molex-mx150-application-guide.89162/

 

[BudT]

Check this too: https://www.f150ecoboost.net/threads/molex-mx150-application-guide.89162/

Excellent- thanks! Page 33 looks particularly useful.

 

[snakebitten]

I think it looks like you do press down on the horseshoe u shaped part. My guess.

I believe so. But if it's never been decoupled before, it can feel so tight that you don't think it's going to come apart. And then it does.

 

[BudT]

The key is to press down on the horseshoe bit, and simultaneously push the two pieces of the connector together before pulling them apart. Page 33 of the pdf that @Boatwaco shared was the key to figuring this out.

 

[caryseven]

In amateur radio, we use self-amalgamating silicon tape to water seal coax. Now that I've seen your photo, I think I should get down there and wrap from where the wires exit the sheath to just beyond where they enter the plastic shell. IDK what they do to seal those individual wire connections, but I imagine they're just crimped into the pin/socket connectors and then pushed/clicked into the shell.

 

[BudT]

In amateur radio, we use self-amalgamating silicon tape to water seal coax. Now that I've seen your photo, I think I should get down there and wrap from where the wires exit the sheath to just beyond where they enter the plastic shell. IDK what they do to seal those individual wire connections, but I imagine they're just crimped into the pin/socket connectors and then pushed/clicked into the shell.

Good idea. I have a bunch of that coax seal tape and I should do the same.

 

[BudT]

FYI I've got a service appointment tomorrow to take a look at this error. Again, it only happens when the temperature outside is about 30F or less. Hopefully I'll have some kind of solution to report after tomorrow.

 

[snakebitten]

Hope it works out for you.
I want to be optimistic, but I haven't exactly seen evidence that gives me faith.

 

[GearHead_1]

Hope it works out for you.
I want to be optimistic, but I haven't exactly seen evidence that gives me faith.

Isn't faith believing without having evidence (proof)?

 

[BudT]

And here is the initial correspondence back from servicing today:

"Ok so there was fault code stored for the issue and also a technical service bulletin which has the tech reconfigure the module that control pro power on demand. It's not really cold enough to test it out and looking at the forecast the low the next few nights doesn't get any lower than 37 degrees so if you want to leave it here and we can test it out in the morning we can. I just don't think it going to get cold enough"

So I'm going to pick it up today and we'll see if the fault comes back in a few days when it turns colder (it's 65°F today).

 

[BudT]

I got the truck back. And the Ford valet pickup/drop-off service is awesome. They picked it up at my house this morning and brought it back to me this evening.

Here is the service description:

found dtc for dcaca module internal faults detected but no hard fault codes present. re-configured dcaca module. concern not present. customer to return vehicle if concern reoccurs.

 

[snakebitten]

@BudT

There's a brand spanking new TSB regarding the DCACA on some trucks, but I thought it was trucks with 2KW ProPower? (ICE trucks with dual alternators)

It requires a PCM module update.

But I don't think they stated that they updated the PCM. So it probably isn't for the Powerboost.

 

[BudT]

Hopefully the is the final update for this situation. The dealer replaced the DCACA inverter module (ML3Z 14G649 D : CONVERTER ASY - VOLTAGE) and I got the truck back yesterday. It only took them a couple of days once they got the part. It looks like they had to remove the "mid to bck of exhaust system & shield" to access the inverter, and "Installed VC 13 G :ANTI_FREEZE". I did not talk to the tech (this is all from the work order) but I am guessing they had to remove the coolant pre-heater line that runs over the exhaust, and therefore had to top off the coolant afterwards. They also "performed pmi programming on the dcaca module."

They have been really good with not keeping the truck when I needed it. This weekend will be a good test as we're supposed to be below 0°F for about 72 hours straight. It's currently -7°F outside right now.

 

[Boatwaco]

Glad the trucks back home with you. Definitely test it out in the cold weather and let us know if it’s all a-ok! Stay warm. Stay safe.

 

[BudT]

-10°F and working!

 

[snakebitten]

Hopefully the is the final update for this situation. The dealer replaced the DCACA inverter module (ML3Z 14G649 D : CONVERTER ASY - VOLTAGE) and I got the truck back yesterday. It only took them a couple of days once they got the part. It looks like they had to remove the "mid to bck of exhaust system & shield" to access the inverter, and "Installed VC 13 G :ANTI_FREEZE". I did not talk to the tech (this is all from the work order) but I am guessing they had to remove the coolant pre-heater line that runs over the exhaust, and therefore had to top off the coolant afterwards. They also "performed pmi programming on the dcaca module."

They have been really good with not keeping the truck when I needed it. This weekend will be a good test as we're supposed to be below 0°F for about 72 hours straight. It's currently -7°F outside right now.

That's good news!

Yea, they lost a little coolant in the Hybrid coolant loop when they replaced the component itself.
Sounds like you have the good fortune of a Powerboost knowledgeable service department. Be happy about that!

It's not the first DCACA replacement I have read about. Not common, but not very rare either.